46295 + Interview Questions in Chemistry

1.	Select the correct statements
Answer» Select the correct statements

Discussion

2.	What is stark effect?
Answer» What is stark effect?

Discussion

3.	Maximum bond angle at nitrogen is present in which of the following ?
Answer» Maximum bond angle at nitrogen is present in which of the following ?

Discussion

4.	the pH of 0.1M NH_4Cl solution is (given pK_b=4.74)
Answer» the pH of 0.1M NH_4Cl solution is (given pK_b=4.74)

Discussion

5.	Concentrated is used in the confirmatory test for sulphate ion.
Answer» Concentrated is used in the confirmatory test for sulphate ion.

Discussion

6.	Consider an chemical reaction 2A→2B+C, It is given that it is first order reaction the find rate cons†an t in terms of concentration
Answer» Consider an chemical reaction 2A→2B+C, It is given that it is first order reaction the find rate cons†an t in terms of concentration

Discussion

7.	An electron is accelerated through a potential difference of 500 V. What is its de-Broglie wavelength?
Answer» An electron is accelerated through a potential difference of $500 V$ . What is its de-Broglie wavelength?

Discussion

8.	Which of the following is an acidic oxide?
Answer» Which of the following is an acidic oxide?

Discussion

9.	When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]2− ,MnO2 ,Mn2O3, [Mn]2+ ,then the number of electrons transferred in each case respectively is
Answer» When $K M n O_{4}$ acts as an oxidising agent and ultimately forms $[M n O_{4}]^{2 -}$ , $M n O_{2}$ _, $M n_{2} O_{3}$ , $[M n]^{2 +}$ ,then the number of electrons transferred in each case respectively is

Discussion

10.	Two identical trains are moving on rails along the equator on the earth in opposite directions with the same speed . Will the exert the same pressure on the rails
Answer» Two identical trains are moving on rails along the equator on the earth in opposite directions with the same speed . Will the exert the same pressure on the rails

Discussion

11.	Reagent used for conversion of allyl alcohol to acrolein is:
Answer» Reagent used for conversion of allyl alcohol to acrolein is:

Discussion

12.	In which of the following molecules is back bonding present?
Answer» In which of the following molecules is back bonding present?

Discussion

13.	What is the freezing point of a solution containing 8.1 g HBr in 100g water assuming the acid to be 90% ionised (Kf for water =1.86 Kmole-1)
Answer» What is the freezing point of a solution containing 8.1 g HBr in 100g water assuming the acid to be 90% ionised (K_f for water =1.86 Kmole^-1)

Discussion

14.	In which of the following reactions, the increase in volume of the container will favour the formation of products?
Answer» In which of the following reactions, the increase in volume of the container will favour the formation of products?

Discussion

15.	The element in which electrons are progressively filled in 4f - orbital are called (a) actinoids (b) transition elements (c) Lanthanoids (d) halogens
Answer» The element in which electrons are progressively filled in 4f - orbital are called (a) actinoids (b) transition elements (c) Lanthanoids (d) halogens

Discussion

16.	What is product forme when cyclohexanone undergoes aldol condensation with formaldehyde
Answer» What is product forme when cyclohexanone undergoes aldol condensation with formaldehyde

Discussion

17.	Metallic gold crystallizes in the face-centred cubic lattice. The edge length of the cubic unit cell, a≈4 ∘A. The closest distance between centres of two gold atoms is:
Answer» Metallic gold crystallizes in the face-centred cubic lattice. The edge length of the cubic unit cell, $a \approx 4 \circ A$ . The closest distance between centres of two gold atoms is:

Discussion

18.	At absolute zero temperature, entropy of all substance is zero(True or False)
Answer» At absolute zero temperature, entropy of all substance is zero(True or False)

Discussion

19.	An organic compound 'A' reacts with Sodium metal and forms 'B'. On heating with conc.H2SO4, A gives diethyl ether. A and B respectively.
Answer» An organic compound 'A' reacts with Sodium metal and forms 'B'. On heating with conc.H₂SO₄, A gives diethyl ether. A and B respectively.

Discussion

20.	What will happen if aniline is treated with fuming nitric acid
Answer» What will happen if aniline is treated with fuming nitric acid

Discussion

21.	Calculate the weight of CO having the same number of oxygen atoms as are present in 22g of CO2
Answer» Calculate the weight of CO having the same number of oxygen atoms as are present in 22g of $C O_{2}$

Discussion

22.	According to Bohr's theory, the angular momentum of an electron in 5th orbit is
Answer» According to Bohr's theory, the angular momentum of an electron in 5th orbit is

Discussion

23.	Hybridisation is a technique of:
Answer» Hybridisation is a technique of:

Discussion

24.	During an analysis of 255 mg of a molecule that contains only C, H and O, 561 mg CO2 is produced along with 306 mg H2O on combustion. If the molar mass of the compound is 180 g/mol, what is the molecular formula of the compound ?
Answer» During an analysis of $255 mg$ of a molecule that contains only $C, H$ and $O$ , $561 mg C O_{2}$ is produced along with $306 mg H_{2} O$ on combustion. If the molar mass of the compound is $180 g/mol$ , what is the molecular formula of the compound ?

Discussion

25.	4 B is a sodium salt .When a solution of B was added to aqueous silver nitrate a white precipitate C was formed. The precipitate did not dissolve in dilute nitric acid .Identify the anion in B and the white precipitate C
Answer» 4 B is a sodium salt .When a solution of B was added to aqueous silver nitrate a white precipitate C was formed. The precipitate did not dissolve in dilute nitric acid .Identify the anion in B and the white precipitate C

Discussion

26.	The major product will be:
Answer» The major product will be:

Discussion

27.	Let mass of electron is half, mass of proton is two times and mass of neutron is three fourth of original masses. Then new atomic weight of O16 atom :- A. Increase by 37.5%. B. Remain constant C. Increase by 12.5%. D. Decrease by 25%
Answer» Let mass of electron is half, mass of proton is two times and mass of neutron is three fourth of original masses. Then new atomic weight of O¹⁶ atom :- A. Increase by 37.5%. B. Remain constant C. Increase by 12.5%. D. Decrease by 25%

Discussion

28.	Structure and explanation of ears.
Answer» Structure and explanation of ears.

Discussion

29.	Maximum number of hydrogen bond that can be formed by one water molecule
Answer» Maximum number of hydrogen bond that can be formed by one water molecule

Discussion

30.	6.02×1020 molecules of urea are present in 100 mL of its solution. The concentration of solution is:
Answer» $6.02 \times 10^{20}$ molecules of urea are present in $100 mL$ of its solution. The concentration of solution is:

Discussion

31.	For the reaction N2(g)+3H2(g)⇌2NH3(g),ΔH=−93.6 kJ mol−1. The amount (i.e. number of mole) of~H2 at equilibrium will increase if
Answer» For the reaction $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g), Δ H = - 93.6 k J m o l^{- 1}$ . The amount (i.e. number of mole) of~ $H_{2}$ at equilibrium will increase if

Discussion

32.	The equation of state of a gas is P(V−nb)=nRT, where b and R are constants. If the pressure and the temperature are such that Vm=10b, what is the value of compressibility factor?
Answer» The equation of state of a gas is $P (V - n b) = n R T$ , where $b$ and $R$ are constants. If the pressure and the temperature are such that $V_{m} = 10 b,$ what is the value of compressibility factor?

Discussion

33.	Cathode ray strike tungsten and produce which ray?
Answer» Cathode ray strike tungsten and produce which ray?

Discussion

34.	39. In which case extent of overlap is max? 1 S-S 2 S-P 3 P-P 4 same in every case
Answer» 39. In which case extent of overlap is max? 1 S-S 2 S-P 3 P-P 4 same in every case

Discussion

35.	x+4/x^2+3>0 then x E
Answer» x+4/x^2+3>0 then x E

Discussion

36.	50. How does hydration energy effect electrolytic conduction
Answer» 50. How does hydration energy effect electrolytic conduction

Discussion

37.	If, in the reaction N2O4(g)⇌2NO2(g), one mole of N2O4 taken initially and x is that part of N2O4 which dissociates, then the number of moles at equilibrium will be:
Answer» If, in the reaction $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g),$ one mole of $N_{2} O_{4}$ taken initially and $x$ is that part of $N_{2} O_{4}$ which dissociates, then the number of moles at equilibrium will be:

Discussion

38.	Is e/m ratio same for neutron and gamma rays?
Answer» Is e/m ratio same for neutron and gamma rays?

Discussion

39.	Solubility product of A2X3.4H2O is given by
Answer» Solubility product of $A_{2} X_{3} . 4 H_{2} O$ is given by

Discussion

40.	For the reversible reaction, A+2B→3C, if equilibrium constant is 1×102 at 27°C then the value of ΔrG∘ at the same temperature will be:(R=2 cal K−1 mol−1)
Answer» For the reversible reaction, $A + 2 B \to 3 C$ , if equilibrium constant is $1 \times 10^{2}$ at 27°C then the value of $Δ r G^{\circ}$ at the same temperature will be: $(R = 2 c a l K^{- 1} m o l^{- 1})$

Discussion

41.	Among the following, the usual test of ferrous iron is not given by
Answer» Among the following, the usual test of ferrous iron is not given by

Discussion

42.	Dry air was bubbled through a bulb containing 22 g of an non-volatile organic compound in 150 g of water, then it passed through a bulb containing water at the same temperature and finally through a bulb containing anhydrous calcium chloride. The weight loss in bulb containing water was 0.075 g and gain in mass of the calcium chloride tube was 1.5 g.Calculate the molecular mass of the organic substance.
Answer» Dry air was bubbled through a bulb containing $22 g$ of an non-volatile organic compound in $150 g$ of water, then it passed through a bulb containing water at the same temperature and finally through a bulb containing anhydrous calcium chloride. The weight loss in bulb containing water was $0.075 g$ and gain in mass of the calcium chloride tube was $1.5 g$ . Calculate the molecular mass of the organic substance.

Discussion

43.	consider an atom with atomic number z as consisting of a positive point charge at the centre and surrounded by a distribution of negative electricity uniformly distributed within a sphere ofradius R. The electric field at a point inside the atom at a distance r from the centre is
Answer» consider an atom with atomic number z as consisting of a positive point charge at the centre and surrounded by a distribution of negative electricity uniformly distributed within a sphere ofradius R. The electric field at a point inside the atom at a distance r from the centre is

Discussion

44.	475233 At 25^° C, higheC, the highest osmotic pressure is exhibitedby 0.1 M solution of(1) Glucose(3) CaCh(2) Urea(4) KCI
Answer» 475233 At 25^° C, higheC, the highest osmotic pressure is exhibitedby 0.1 M solution of(1) Glucose(3) CaCh(2) Urea(4) KCI

Discussion

45.	How do analgesics work in the body?
Answer» How do analgesics work in the body?

Discussion

46.	InMilikan’s experiment, static electric charge on the oil dropshas been obtained by shining X-rays. If the static electric charge onthe oil drop is –1.282 × 10–18C,calculate the number of electrons present on it.
Answer» In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is –1.282 × 10^–18C, calculate the number of electrons present on it.

Discussion

47.	The major product U in following reactions is
Answer» The major product U in following reactions is

Discussion

48.	The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is:
Answer» The correct order of increasing thermal stability of $K_{2} C O_{3}, M g C O_{3}, C a C O_{3} a n d B e C O_{3}$ is:

Discussion

49.	Question 37Intake of a small quantity of methanol can be lethal. Comment.
Answer» Question 37 Intake of a small quantity of methanol can be lethal. Comment.

Discussion

50.	Read the following and select one the correct answer:Statement I: Alkali metals dissolve in liquid ammonia to give a blue solutionStatement II: Alkali metals dissolve in liquid ammonia to give solvated species of the type [M(NH3)n]+
Answer» Read the following and select one the correct answer: Statement I: Alkali metals dissolve in liquid ammonia to give a blue solution Statement II: Alkali metals dissolve in liquid ammonia to give solvated species of the type $[M (N H_{3})_{n}]^{+}$

50.

Read the following and select one the correct answer:Statement I: Alkali metals dissolve in liquid ammonia to give a blue solutionStatement II: Alkali metals dissolve in liquid ammonia to give solvated species of the type [M(NH3)n]+

Answer»

Read the following and select one the correct answer:

Statement I: Alkali metals dissolve in liquid ammonia to give a blue solution

Statement II: Alkali metals dissolve in liquid ammonia to give solvated species of the type $[M (N H_{3})_{n}]^{+}$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Select the correct statements

What is stark effect?

Maximum bond angle at nitrogen is present in which of the following ?

the pH of 0.1M NH_4Cl solution is (given pK_b=4.74)

Concentrated is used in the confirmatory test for sulphate ion.

Consider an chemical reaction 2A→2B+C, It is given that it is first order reaction the find rate cons†an t in terms of concentration

An electron is accelerated through a potential difference of 500 V. What is its de-Broglie wavelength?

Which of the following is an acidic oxide?

When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]2− ,MnO2 ,Mn2O3, [Mn]2+ ,then the number of electrons transferred in each case respectively is

Two identical trains are moving on rails along the equator on the earth in opposite directions with the same speed . Will the exert the same pressure on the rails

Reagent used for conversion of allyl alcohol to acrolein is:

In which of the following molecules is back bonding present?

What is the freezing point of a solution containing 8.1 g HBr in 100g water assuming the acid to be 90% ionised (Kf for water =1.86 Kmole-1)

In which of the following reactions, the increase in volume of the container will favour the formation of products?

The element in which electrons are progressively filled in 4f - orbital are called (a) actinoids (b) transition elements (c) Lanthanoids (d) halogens

What is product forme when cyclohexanone undergoes aldol condensation with formaldehyde

Metallic gold crystallizes in the face-centred cubic lattice. The edge length of the cubic unit cell, a≈4 ∘A. The closest distance between centres of two gold atoms is:

At absolute zero temperature, entropy of all substance is zero(True or False)

An organic compound 'A' reacts with Sodium metal and forms 'B'. On heating with conc.H2SO4, A gives diethyl ether. A and B respectively.

What will happen if aniline is treated with fuming nitric acid

Calculate the weight of CO having the same number of oxygen atoms as are present in 22g of CO2

According to Bohr's theory, the angular momentum of an electron in 5th orbit is

Hybridisation is a technique of:

During an analysis of 255 mg of a molecule that contains only C, H and O, 561 mg CO2 is produced along with 306 mg H2O on combustion. If the molar mass of the compound is 180 g/mol, what is the molecular formula of the compound ?

4 B is a sodium salt .When a solution of B was added to aqueous silver nitrate a white precipitate C was formed. The precipitate did not dissolve in dilute nitric acid .Identify the anion in B and the white precipitate C

The major product will be:

Let mass of electron is half, mass of proton is two times and mass of neutron is three fourth of original masses. Then new atomic weight of O​​​​​​16 atom :- A. Increase by 37.5%. B. Remain constant C. Increase by 12.5%. D. Decrease by 25%

Structure and explanation of ears.

Maximum number of hydrogen bond that can be formed by one water molecule

6.02×1020 molecules of urea are present in 100 mL of its solution. The concentration of solution is:

For the reaction N2(g)+3H2(g)⇌2NH3(g),ΔH=−93.6 kJ mol−1. The amount (i.e. number of mole) of~H2 at equilibrium will increase if

The equation of state of a gas is P(V−nb)=nRT, where b and R are constants. If the pressure and the temperature are such that Vm=10b, what is the value of compressibility factor?

Cathode ray strike tungsten and produce which ray?

39. In which case extent of overlap is max? 1 S-S 2 S-P 3 P-P 4 same in every case

x+4/x^2+3>0 then x E

50. How does hydration energy effect electrolytic conduction

If, in the reaction N2O4(g)⇌2NO2(g), one mole of N2O4 taken initially and x is that part of N2O4 which dissociates, then the number of moles at equilibrium will be:

Is e/m ratio same for neutron and gamma rays?

Solubility product of A2X3.4H2O is given by

For the reversible reaction, A+2B→3C, if equilibrium constant is 1×102 at 27°C then the value of ΔrG∘ at the same temperature will be:(R=2 cal K−1 mol−1)

Among the following, the usual test of ferrous iron is not given by

consider an atom with atomic number z as consisting of a positive point charge at the centre and surrounded by a distribution of negative electricity uniformly distributed within a sphere ofradius R. The electric field at a point inside the atom at a distance r from the centre is

475233 At 25^° C, higheC, the highest osmotic pressure is exhibitedby 0.1 M solution of(1) Glucose(3) CaCh(2) Urea(4) KCI

How do analgesics work in the body?

InMilikan’s experiment, static electric charge on the oil dropshas been obtained by shining X-rays. If the static electric charge onthe oil drop is –1.282 × 10–18C,calculate the number of electrons present on it.

The major product U in following reactions is

The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is:

Question 37Intake of a small quantity of methanol can be lethal. Comment.

Read the following and select one the correct answer:Statement I: Alkali metals dissolve in liquid ammonia to give a blue solutionStatement II: Alkali metals dissolve in liquid ammonia to give solvated species of the type [M(NH3)n]+

Let mass of electron is half, mass of proton is two times and mass of neutron is three fourth of original masses. Then new atomic weight of O16 atom :- A. Increase by 37.5%. B. Remain constant C. Increase by 12.5%. D. Decrease by 25%